UPDATE, 11:52 a.m.: The accident scene is clear and all lanes are open. Traffic is slow with a "residual delay," @MassDOT reports.

STURBRIDGE -- An accident on the Massachusetts Turnpike has closed the left travel lane on the eastbound side of the highway in Sturbridge, the state Department of Transportation reported around 11:30 a.m. Thursday.

Around 10 a.m. Thursday, the agency reported a separate 3-mile backup in the westbound lanes of the highway near exit 9 in Sturbridge.

Traffic and travel updates are available via the agency's Twitter, feed: @MassDOT.